Ok so, If you download it as a basic zip and extract it, it works just fine. However, if you download it from the app, it isn't actually fully downloading it and causes it to become corrupted. This just started happening as of this update so I'm not sure what you changed that could have caused this. Since the save files are separate it is not a huge deal to me personally, but if anyone else tries to play it through the app they will likely have the same issues. To clarify I am talking about the desktop app, which is quite nice and it handles updates great (usually lol). 

I think the only way you would be able to replicate this is if you used the app yourself to see what i am talking about. It's difficult to describe what it does, but it seems to make a folder of game files that is just empty data.

For now, I shall just use the separate new version file.